package com.sky.servlet;

import com.sky.bean.NewsBean;
import com.sky.dao.NewsDao;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

@WebServlet("/newsEdit.jsp")
public class NewsUpdateServlet extends HttpServlet {
    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        req.setCharacterEncoding("UTF-8");
        String newsTitle = req.getParameter("NewsTitle");
        String newsContent =req.getParameter("NewsContent");
        NewsBean newsBean = new NewsBean();//实例化新闻对象
        int newsId = Integer.parseInt( req.getParameter("newsId"));
        newsBean.setNewsID(newsId);
        newsBean.setNewsTitle(newsTitle);//设置新闻标题
        newsBean.setNewsContent(newsContent);//设置新闻内容
        newsBean.setAdminName("Admin");
        NewsDao newsDao = new NewsDao();//实例化 新闻DAO
        newsDao.update(newsBean);//调用添加方法 传递新闻对象
        //在Servlet中调用使用网址跳转 请求结果对象

        int result = newsDao.update(newsBean);
        if (result>0) {
            resp.sendRedirect("news.jsp");//参数是相对网址
        } else{
        req.setAttribute("msg","更新失败");// 错误页面显示的内容
        req.setAttribute("url","news.jsp");// 显示错误信息后要跳转的页面
        req.getRequestDispatcher("WEB-INF/error.jsp").forward(req, resp);
    }
}
}
